# US 10,481,021 B2 · Supercapacitive iontronic nanofabric sensing assemblies

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- Number: US 10,481,021 B2
- Document ID: US10481021B2
- Status: Granted
- Kind: B2
- Application number: 15/990,564
- Filed: 2018-05-25
- Published: 2018-11-29
- Granted: 2019-11-19
- Earliest claimed: 2017-05-25
- Assignees: Tacsense, Inc.
- Applicants: Tacsense, Inc.; The Regents of the University of California
- Inventors: Tingrui Pan; Ruya Li; Benjamin Arthur Bazor
- Web page: https://patentgrep.com/patent/US10481021B2

## CPC

- B32B 27/283: {comprising polysiloxanes}
- G01L 1/146: {for measuring force distributions, e.g. using force arrays (G01L1/148 takes precedence)}
- A41D 1/002: {adapted to accommodate electronic equipment (patients' garments for medical monitoring A41D13/1281; luminous ornaments A41D27/085)}
- A41D 13/1281: {with incorporated means for medical monitoring}
- A41D 19/0027: {Measuring instruments, e.g. watch, thermometer}
- A41D 25/00: Neckties
- A41D 27/205: {Pockets adapted to receive a mobile phone or other electronic equipment}
- A61B 5/447: {specially adapted for aiding the prevention of ulcer or pressure sore development, i.e. before the ulcer or sore has developed}
- A61B 5/6803: {Head-worn items, e.g. helmets, masks, headphones or goggles}
- A61B 5/6804: {Garments; Clothes}
- A61B 5/6806: {Gloves}
- B32B 5/022: {Non-woven fabric}
- B32B 5/024: {Woven fabric}
- B32B 5/26: another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)}
- B32B 7/022: Mechanical properties
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 25/08: of synthetic resin
- B32B 25/10: next to a fibrous or filamentary layer
- B32B 27/12: next to a fibrous or filamentary layer
- B32B 27/40: comprising polyurethanes
- D03D 1/0088: {Fabrics having an electronic function}
- D03D 15/00: Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- A43B 3/34: with electrical or electronic arrangements
- A43B 7/147: {for sick or disabled persons, e.g. persons having osteoarthritis or diabetes}
- A43B 23/0205: {characterised by the material (material of the lining A43B23/07, material of toe stiffeners or heel stiffeners A43B23/08)}
- A61B 2503/10: Athletes
- A61B 2505/05: Surgical care
- A61B 2562/0247: Pressure sensors
- A61B 2562/0285: Nanoscale sensors
- B32B 2250/03: 3 layers
- B32B 2262/0276: Polyester fibres
- B32B 2262/103: Metal fibres
- B32B 2307/202: Conductive
- B32B 2307/51: Elastic
- B32B 2307/546: Flexural strength; Flexion stiffness
- B32B 2437/00: Clothing
- B32B 2437/02: Gloves, shoes
- D10B 2401/16: antistatic; conductive
- D10B 2501/041: Gloves
- D10B 2501/043: Footwear
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- G01L: MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE (weighing G01G)
- A41D: OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- D03D: WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- A43B: CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- D10B: INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES

## Abstract

A fabric-based pressure sensor assembly utilizing in ionic material and conductive material is disclosed. The sensing device can be applied in several various wearable health and biomedical applications on complex body topologies. As an alternative to conventional flexible sensors, the fabric-based sensor assembly yields high device sensitivity and desirable parameters for pressure sensing in a wearable construct. The sensor assembly enables rapid mechanical responses (in the milliseconds range) for high-frequency biomechanical signals, e.g., blood pressure pulses and body movements. The fabrication process for the device is low-cost highly compatible with existing industrial manufacturing processes.

## Claims

### Claim 1

A sensor assembly comprising:
an ionic material coated on a plurality of fibers, wherein the ionic material is circumferentially coated on an outer surface of the plurality of fibers;
a conducting material contacting the ionic material at an interface between the conducting material and the plurality of fibers, wherein the conducting material is a layer engaging the circumferentially coated ionic material at the interface between the conducting material and the outer surface of the plurality of fibers;
wherein the combination of the ionic material and the conducting material form a fabric-based pressure sensor yielding an electrical signal in response to pressure exerted on the sensor assembly.

### Claim 2 (depends on 1)

The sensor assembly of claim 1, wherein the conducting material is discontinuous across the contact interface between the conducting material and the plurality of fibers.

### Claim 3 (depends on 2)

The sensor assembly of claim 2, wherein the conducting material is patterned across the plurality of fibers.

### Claim 4 (depends on 1)

The sensor assembly of claim 1 further comprising a nonconductive fabric layer.

### Claim 5 (depends on 1)

The sensor assembly of claim 1, further comprising a heat bonding liner and wherein the conducting material is woven into a conductive fabric layer.

### Claim 6

A sensor assembly comprising:
an ionic material coated on a plurality of fibers,
a conducting material contacting the ionic material at an interface between the conducting material and the plurality of fibers,
a sealing material surrounding the ionic material and the conducting material;
wherein the combination of the ionic material and the conducting material form a fabric-based pressure sensor yielding an electrical signal in response to pressure exerted on the sensor assembly.

### Claim 7

A sensor assembly comprising:
an ionic material formed as a plurality of nanofibers,
a conducting material contacting the ionic material at an interface between the conducting material and the plurality of ionic nanofibers,
wherein the combination of the plurality of ionic nanofibers and the conducting material form a fabric-based pressure sensor yielding an electrical signal in response to pressure exerted on the sensor assembly.

### Claim 8 (depends on 7)

The sensor assembly of claim 7, wherein the conducting material is patterned across the plurality of ionic nanofibers.

### Claim 9 (depends on 7)

The sensor assembly of claim 7 further comprising a nonconductive fabric layer.

### Claim 10 (depends on 7)

The sensor assembly of claim 7, wherein the conducting material is woven into a conductive fabric layer.

### Claim 11 (depends on 7)

The sensor assembly of claim 7, further comprising a heat bonding liner.

### Claim 12 (depends on 7)

The sensor assembly of claim 7, further comprising a sealing material surrounding the plurality of ionic nanofibers and the conducting material.